Switch the case to the new Antec GX700, has a pair of 140mm fans, a single 120mm fan and a fan controller, which means better overall cooling than the Enforcer, less work and noise for the CPU and GPU fans, and almost as ugly.

For HDD, I'd go for a Seagate Barracuda first, or WD Blue if cheaper, and leave the SSD out of the build for now. You can get an SSD later when you save for it so you can go for a HD7970 and upgrade your PSU to 650W.

The reason is otherwise you'd be stuck with a mid-end Video card and a low capacity SSD and no room to upgrade, and you will give yourself room to do what every self-rig-builder should, overclock your CPU & GPU.